Thanks to my friend Christian Peters who worked hard for many
hours this EAI lecture is now available as podcast including
audio and synchronized video (slides :-) )
here (about 17 MB). If you are interested in the audio data
only, you can find a 16 MB mp3 coded file
here.

A
Practical Approach to Analog Computers by John D. Strong and
George Hannauer gives a good introduction to analog
computing using the then new EAI-231R tube based analog computer,
one of the finest instruments ever made.

Stored Program
Concept for Analog Computers - this was prepared for the
George C. Marshall Space Flight Center, NASA in 1968 when they
requested a study to be performed by EAI whether some form of
automatic programming was possible for analog computers. The
resulting switch matrices came to be known as Hannauer matrices.
I would like to thank Alex Bochannek from the Computer History
Museum who scanned this study.

EAI HYDAC - a truly wonderful
six page publication describing the then new EAI HYDAC 2000 system
with wonderful pictures of the system (about 1.3 MB). In addition
to this there is a
letter from EAI to its
customers introducing the HYDAC system (in German, 162 kB).

EAI Maintenance Pocket
Guide - this small booklet (13 MB!) contains a wealth of
information helping the field engineering during repairs of EAI
analog computers. The most important part (at least for me) is
the section describing the integrated circuits used and the
list with transistor replacement types.

Thanks to my friend Hans
Kulk who sent me some wonderful manuals and thanks to
my beloved wife Rikka
who devotes much time to the scanning of documentation, you can now
download a wonderful
brochure of Hitachis 200X analog computer
(38 pages, English, about 7 MB).

Thanks to my friend Hans
Kulk who sent me a copy of the following, you can now
download the complete
TELEFUNKEN ZEITUNG, Jahrgang 29, 1966, Heft 1,
Herausgeber Prof. Dr. W. T. Runge (German, about 16 MB!).
This wonderful publication describes the development of a high
precision operational amplifier as used in TELEFUNKEN's
analog computers, it covers the RA 800 Hybrid, describes in detail
the technology of function generation, etc. A truly remarkable
publication and a must read for anyone interested in analog
computing.

D. Bollen once published a wonderful series of articles describing
how to build a homebrew analog computer called
PEAC (thanks to Marc de
Piolenc for providing this wonderful scan), ca. 29 MB.

Matthew Butler

What is a Hybrid Computer
and Why - publication detailing on the hybrid computer
installation at the Control Engineering Department of Cambridge
University (thanks to Matthew Butler for this document), ca.
1 MB.

Thanks to Mr. Böhringer from the Universität Karlsruhe
you can find here
a so called "Studienarbeit" describing the development of a
control system to implement a magnetic suspension (a hovering
metal ball :-) ) - about 18 MB!

Mr. Arno Jacobs developed a symbol library for the well known
layout editor EAGLE which
contains all symbols necessary to draw analog computer setups.
The ZIP-file contains
the library files as well as an example drawing showing a
ball-in-the-box circuit.
I would like to thank Mr. Jacobs cordially for this library and
his permission to make it available at the analog computer museum.

Hybrid
Computing At Lockheed - a truly wonderful brochure showing
the incredibly large hybrid computing facility in use a Lockheed
in the late 1960s. This system is the result of the request for
proposal shown above and consisted of four Comcor Ci5000
analog computers coupled to a Control Data 6400 system. The PDF
file is about 2.5 MB large.

At the VCFE 2006 in Munich I
performed a talk covering the development of analog and hybrid
computers at Telefunken. The slides for this talk can be found
here (about 4.5 MB).

Also at the VCFE 2006 in Munich I
had a second talk covering the basics of analog and hybrid computing.
The slides are available here
(ca. 3 MB).

Yet another talk at the VCFE 2006
in Munich gave some examples of problems with their solution
on an electronic analog computer. The slides may be found
here (ca. 650 kB).

In the summer term 2008 I gave a talk at the University of Hamburg
with the title "Faszination Analogrechnen". The slides are
available here (ca. 3 MB).

Also in 2008 I delivered a talk at the University of Hamburg
about Helmut Hoelzer's work in Peenemünde which eventually led
to the so called Mischgerät and the first truly universal
electronic analog computer which was completed in 1941. The slides
for this talk can be found
here (ca. 1 MB).

Dr. Vogel wrote a great introduction to analog computing which
can be found here
(in German, 1.7 MB).

Dr. Vogel also built a wonderful small electronic analog computer
which is ideally suited for teaching. The documentation of his
analog computer can be found
here (in German,
2.2 MB). Since my conversion of Dr. Vogel's original Word documents
to PDF was erroneous and deleted the first page of the schematics,
the two page schematics of his computer can be found
here for download.

In 1977 Dr. Vogel completed his dissertation about a genuine new
resolver design without complicated diode networks. This is a very
interesting approach and his thesis contains detailed schematics of
his new resolver design. The thesis can be found
here (about 17 MB!).

Dr. Vogel built a tube based analog computer which is described
here (German, 2.7 MB). A wealth
of real programming examples using this wonderful homebrew computer
can be found here (German,
1.8 MB).

A VERY (!) clever way to compute the length of a two element
vector has been described in an old issue of
analog dialogue - this
article is a real treasure (thanks to Marc de Piolenc for cleaning
and enhancing the scan).